<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>动态登录</title>
    <style>
        .login-container {
            width: 300px;
            margin: 0 auto;
            padding-top: 100px;
        }
        .login-form {
            display: flex;
            flex-direction: column;
        }
        .login-form input {
            margin-bottom: 10px;
            padding: 5px;
        }
        .login-form button {
            padding: 5px;
        }
    </style>
</head>
<body>
    <div class="login-container">
        <h1>动态登录</h1>
        <form class="login-form">
            <input type="text" placeholder="用户名" required>
            <input type="password" placeholder="密码" required>
            <button type="submit">登录</button>
        </form>
    </div>
</body>
</html>
